/*
 * Copyright 2013 Glassy Cinema.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package hu.glassy.web.model.common;

import hu.glassy.core.service.common.EntityService;
import hu.glassy.model.common.AbstractEntity;
import org.apache.wicket.injection.Injector;
import org.apache.wicket.model.LoadableDetachableModel;

/**
 *
 * @author Alexander Molnár <molnar.alexander@sonrisa.hu>
 * @param <T>
 */
public abstract class AbstractEntityModel<T extends AbstractEntity> extends LoadableDetachableModel<T>
{

  /**
   * Entity ID
   */
  private Long id;

  /**
   * Konstruktor
   *
   * @param id
   */
  public AbstractEntityModel(final Long id)
  {
    Injector.get().inject(AbstractEntityModel.this);

    this.id = id;
  }

  @Override
  protected T load()
  {
    return getService().findById(id);
  }

  @Override
  public void setObject(final T object)
  {
    super.setObject(object);

    if (object == null)
    {
      id = null;
    }
    else
    {
      id = object.getId();
    }
  }

  /**
   * Returns the service which is used to retrive the entity.
   *
   * @return
   */
  protected abstract EntityService<T> getService();
}
